Building your own pet robot is cool, but building your own super smart lizard with artificial intelligence? That's wild! Follow the detailed instructions to build your own 13" long kingii dragon, then use the 2-way function switch to program the infrared sensor to "escape" or "approach" mode. In escape mode, the dragon will drop its jaw, flash its bicolor LED eyes, and spread out its frill at you. Not intimated? It turns and scampers away. In approach mode, your kingii will extend and shake its frill to bluff you. If it doesn't sense danger, it will approach with a wagging tail like a good pet lizard. Uses 4 AAA batteries (sold separately). Assembly Tips